Don't be too sure. Remember that it was Thomas who held that a conviction of a U.S. citizen in a foreign court was suitable grounds for lifetime denial of an American's second amendment rights.
Thankfully, his was a minority view on that one. But he deserves watching for such future rulings.
"This court has not had recent occasion to consider the nature of the substantive right safeguarded by the Second Amendment. If, however, the Second Amendment is read to confer a personal right to "keep and bear arms", a colorable argument exists that the Federal government's regulatory scheme, at least as it pertains to the purely intrastate sale or possession of firearms, runs afoul of that Amendment's protections....Perhaps at some future date this court will have the opportunity to determine whether Justice Story was correct when he wrote that the RKBA "has justly been considered as the palladium of the liberties of a republic..."